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Control of information signal processing channel

Subclass of:

369 - Dynamic information storage or retrieval

369470100 - CONTROL OF STORAGE OR RETRIEVAL OPERATION BY A CONTROL SIGNAL TO BE RECORDED OR REPRODUCED

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
369470280 For phase, timing, or rate processing 40
369470190 For modulating or demodulating 24
369470250 For gain processing 16
369470170 For removal of unwanted signal component 11
369470200 For multiplexing or demultiplexing 8
369470350 For sampling, digital to analog or analog to digital converting 4
20110199875CD/DVD Mode Selection Control Using Laser Diode Voltage - Circuitry for controlling mode selection of a CD/DVD reader is described. In one embodiment, the CD/DVD reader has a first device having at least one analog output, a second device having at least one digital input and at least one analog input, and an interface circuit coupling the analog output of the first device to the digital input and the analog input in the second device. The interface circuit includes a circuitry to use a single control signal from the analog output of the first device to control the digital input and the analog input in the second device. Other embodiments are also described.08-18-2011
20080285406OPTICAL DISC APPARATUS AND OPTICAL DISC REPRODUCTION METHOD - Provided is an optical disc apparatus which reproduces with use of a PRML method an optical disc having data recorded in a plurality of code lengths, the optical disc apparatus including: an AD conversion unit adapted to convert a reproduction signal of the optical disc into a multi-value digital signal; a waveform equalization unit adapted to perform waveform equalization on the multi-value digital signal on the basis of a predetermined partial response to generate an equalized reproduction signal; a decoding unit adapted to generate decoded data corresponding to data recorded on the optical disc from the equalized reproduction signal; and a crest value extraction unit adapted to extract a crest value for each of the code lengths on the basis of the decoded data and a type of the predetermined partial response.11-20-2008
20090219797SIGNAL REGENERATOR - Pulses that are generated from multiple analog input signals are sampled, and signal elements contained in the analog signals are extracted accurately using the said sampling pulses. Binarization circuits where analog input signals A, B, C, and D are converted into pulse signals; a logic operation circuit that generates a sampling pulse upon receiving the input of the 4 pulse signals; and a sample-and-hold circuit samples and holds an input RF signal based on the sampling pulse in order to extract accurately signal elements contained in said RF signal by means of sampling of the RF signal.09-03-2009
20110038242HYBRID LASER DIODE DRIVERS THAT INCLUDE A STATE MACHINE - Provided herein are hybrid laser diode drivers (LDDs) that drive a laser diode in response to receiving enable signals from a controller. In accordance with specific embodiments, a hybrid LDD includes a read channel to selectively output a read current, one or more write channel each to selectively output a write current, and an oscillator channel to selectively output an oscillator current. Additionally, in specific embodiments the hybrid LDD includes a state machine that receives the enable signals from the controller, and based on the enable signals, controls timing of the currents output by the read, write and oscillator channels.02-17-2011
369470230 For sequencing or switching 2
20090080300Data transmission method, optical disc recording method and optical disc recording apparatus - A data transmission method for a large amount of contents information, comprises the following steps of: 03-26-2009
20120008474RECORDING MEDIUM, RECORDING METHOD, REPRODUCTION METHOD, RECORDING APPARATUS AND REPRODUCTION APPARATUS - A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area of linking frames in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded.01-12-2012
Entries
DocumentTitleDate
20110176400METHOD OF SERVO SPIRAL SWITCHING DURING SELF SERVO-WRITE FOR A DISK DRIVE - A recording medium for a disk drive has a plurality of tracks defined by servo wedges that are written using a first servo spiral set, a second servo spiral set, and a correction factor that accounts for the differences in the first set of spirals and the second set of spirals. The differences may be differences in position values decoded from the first set of spirals and position values decoded from the second set of spirals or differences in timing values decoded from the first set of spirals and timing values decoded from the second set of spirals. The first servo spiral set is used in writing components of the servo wedges that define a first set of tracks. The second servo spiral set and the correction factor are used in writing components of the servo wedges that define a second set of tracks.07-21-2011
20090161509OPTICAL DISC DISCRIMINATING DEVICE, REPRODUCING DEVICE, OPTICAL DISC DISCRIMINATING METHOD, OPTICAL DISC DISCRIMINATING PROGRAM AND RECORDING MEDIUM - [Problems] To accurately and speedily perform discrimination of a plurality of kinds of optical discs by an optical disc discriminating device.06-25-2009
20090196136RECORDABLE TYPE INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS, AND INFORMATION RECORDING METHOD - In a recording disc, a straight groove (08-06-2009
20080259754Recorder, Host Device, Recording Method, Instruction Method, Program, Integrated Circuit, Reproducing Device, Reproducing Method and Write-Once-Read-Many Recording Medium - A recording apparatus for recording information on a write-once recording medium, the write-once recording medium including a disk management information area and a volume space, the recording apparatus including: a host apparatus; and a drive apparatus, the host apparatus including: a first instruction section for instructing the drive apparatus to allocate at least one first track and at least one second track to the volume space; a second instruction section for instructing the drive apparatus to record a file on the at least one first track; a third instruction section for instructing the drive apparatus to record a file structure on the at least one second track, the file structure managing the file; a fourth instruction section for instructing the drive apparatus to record a virtual allocation table structure in the volume space, the virtual allocation table structure managing a recording location of the file structure; and a fifth instruction section for instructing the drive apparatus to record track management information in the disk management information area, the track management information managing the at least one first track and the at least one second track, the drive apparatus including: a head section; and a control section.10-23-2008
20100014397OPTICAL DISC DRIVING DEVICE - An optical disc driving device includes a control circuit 01-21-2010
20110194391LASER DEVICE, OPTICAL PICKUP, AND OPTICAL DISK DEVICE - A laser device includes a semiconductor laser, a signal generating circuit generating a pulse signal for driving the semiconductor laser, an amplifying circuit amplifying the pulse signal, and a control circuit unit provided between the amplifying circuit and the semiconductor laser and controlling the pulse signal by letting alternating-current components of the pulse signal pass through and removing at least part of direct-current components of the pulse signal.08-11-2011
20110194390CONTROL METHOD FOR ADJUSTING LASER POWER OF LASER BEAM IRRADIATING MULTI-LAYER OPTICAL STORAGE MEDIUM AND RELATED CONTROLLER THEREOF - An exemplary control method for controlling access of a multi-layer optical storage medium includes: receiving a layer jump request for moving a focus point from a first recording layer of the multi-layer optical storage medium to a second recording layer of the multi-layer optical storage medium, and in response to the layer jump request, adjusting a laser power of a laser beam irradiating the multi-layer optical storage medium from a first power level to a second power level power level. The first power level is utilized for reproducing information from the first recording layer, and the second power level is utilized for reproducing information from the second recording layer.08-11-2011
20090122670Data retrieval systems - Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, methods of retrieving information from a data storage device previously deactivated by modification or degradation of at least a portion of the data storage device are disclosed.05-14-2009
20090122669OPTICAL DISC DEVICE - An optical disc drive according to the present invention can write data on both a write-once disc and a rewritable disc. The drive includes: a disc recognizing section 05-14-2009
20090122672INFORMATION RECORDING MEDIUM AND RECORDING AND/OR REPRODUCING APPARATUS AND METHOD - An information recording medium and a recording and/or reproducing apparatus and method used to guarantee reproduction compatibility in consideration of the fact that content distribution may be performed according to various business models includes a management information zone in which management information is recorded, wherein the management information indicates an intended type of use of the information recording medium.05-14-2009
20100074074METHOD AND APPARATUS FOR RECORDING OPTICAL INFORMATION, AND METHOD AND APPARATUS FOR REPRODUCING OPTICAL INFORMATION - An optical information recording apparatus includes a first optical system that radiates an information beam that carries information onto a recording medium; a second optical system that radiates reference beams onto the recording medium; a radiation position specifying unit that specifies a plurality of recording spots positioned within a radiation range of the reference beams; and an incident angle obtaining unit that specifies an incident angle of the reference beams that is used for recording an i'th interference fringe into a second recording spot adjacent to a first recording spot, as a value obtained by adding a product of 1/(1+m) and an absolute value of a difference between an incident angle of a first reference beam used for recording an i'th interference fringe into the first recording spot and an incident angle of a second reference beam used for recording an (i+1)'th interference fringe into the first recording spot.03-25-2010
20100046338OPTICAL DISC APPARATUS, FOCUS POSITION CONTROL METHOD AND RECORDING MEDIUM - An optical disc apparatus can highly accurately record a hologram representing information on or reproduce such a hologram from an optical disc. When recording information on an optical disc 02-25-2010
20100046337Recording apparatus, recording method, program, and recording medium - The present invention relates to a recording apparatus, a recording method, a program, and a recording medium whereby data is reproduced from a two-layer optical disk that has yet to be formatted completely. A control section 02-25-2010
20090168619OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK - Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.07-02-2009
20100110847METHOD OF RECORDING ON A DUAL LAYER RECORD CARRIER, AND DEVICE FOR RECORDING ON A DUAL LAYER RECORD CARRIER - The invention relates to a method and a device for recording information on a recordable multi-layer DVD disc wherein information is incrementally recorded on the disc such that the area regarded as containing written information on the first information layer is substantially equal to the area regarded as containing written information on the second information layer. However, an area regarded as containing written information may comprise an area where no information is recorded. In this way a recordable disc is produced from which DVD-ROM players can retrieve the recorded information.05-06-2010
20090154317SEAMLESS RECORDING OF REAL-TIME INFORMATION - A device seamlessly records real-time information on a record carrier in a track on a recording layer via a beam of radiation. The device has a real-time information buffer and an interface for transfer of real-time information and commands between a source and the recording means. While recording the real-time information, the device detects (06-18-2009
20100329090TARGET LEVEL SETTING METHOD FOR A SIGNAL USED IN MAXIMUM-LIKELIHOOD DECODING IN PRML PROCESSING OF A SIGNAL REPRODUCED FROM AN OPTICAL INFORMATION RECORDING MEDIUM, PLAYBACK DEVICE FOR AN OPTICAL INFORMATION RECORDING MEDIUM, AND TARGET LEVEL SETTING PROGRAM FOR A SIGNAL USED IN MAXIMUM-LIKELIHOOD DECODING IN PRML PROCESSING - Target levels in the PRML method are adaptively set under conditions of simplicity and a low cost. A method of setting a target level for reproduction of an optical information recording medium includes: a step of producing a reproduction signal from reflected light of laser light irradiated to an optical information recording medium; a step of performing waveform equalization processing, which depends on a predetermined partial response characteristic, on the reproduction signal to produce a waveform-equalized reproduction signal; a step of detecting peak levels for marks and spaces of a predetermined number of symbols from the waveform-equalized reproduction signal irrespective of a condition for a symbol adjoining each symbol; and a setting step of determining and setting values of a plurality of target levels, which is employed in Viterbi decoding and is arrayed with non-equal intervals among them, on the basis of a relative relationship among the detected peak levels.12-30-2010
20120182848DATA STORAGE - A data storage apparatus and method. The apparatus comprises a mounting structure, a motor mechanically attached to mounting structure, and a data storage platter mechanically attached to the motor. The apparatus additionally comprises a single actuator arm comprising a first and second read/write data head or multiple radial movement mechanisms each comprising a read/write data head. The single actuator arm is configured to move axially along an arc and across a top surface of the data storage platter such that the first read/write data head has access to a first section and a second section of the data storage platter and the second read/write data head only has access to the second section of data storage platter. Each radial movement mechanism moves a different read/write data head radially all along a radius of the data storage platter and over and across different sections of the data storage platter.07-19-2012
20110038241Optical Disc Recording Device - A technique for investigating differences of composition and structural state of a recording layer of an optical disc along with other defects, such as scratches, contamination, warp and distortion, prior to video recording and for setting up appropriate recording conditions in compliance with this result to thereby perform recording is disclosed. In an optical disc recording device capable of recording information on an optical disc, a region to be investigated is defined based on the video recording reservation contents. Then, investigate and evaluate the disc state which can affect the recording quality in a target disc region to be recorded. Next, based on investigation/evaluation results, perform recording setup, recording speed setup, servo control setup and recording position setup to thereby perform the recording. By appropriately modifying the recording setup on a case-by-case basis, it is possible to achieve high-quality recording.02-17-2011
20120307613OPTICAL DISC, OPTICAL DISC DEVICE, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCTION METHOD - An optical disc for recording information with a plurality of sorts of data recording densities. The optical disc has a plurality of data recording areas for recording information with mutually different data recording densities. Information about the data recording densities in the data recording areas is recorded in management information recording areas (BCA and PIC areas) with a specific format not depending on the data recording densities of the data recording areas. In this case, the data recording areas are located to be divided in the same plane of the disc or to be divided into a plurality of recording layers.12-06-2012
20090086595OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS, OPTICAL INFORMATION REPRODUCING APPARATUS, AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD - A focal follow-up control circuit performs follow-up control for a focal point on the data recording/reproducing region by reciprocating an object lens provided in a pickup with respect to a rotating direction of a data recording/reproducing region of an optical disk. The focal follow-up control circuit outputs a focal follow-up deviation signal indicative of a deviation between a follow-up central position of the object lens and a movable neutral point to a spindle control circuit. The spindle control circuit carries out feedback control of a number of rotations of a spindle motor so as to bring this focal follow-up deviation signal to zero.04-02-2009
20090231967RENDERING PRE-RECORDED AND ADDITIONAL CONTENT - A system includes a first storage 09-17-2009
20090231971REPRODUCING APPARATUS, PROGRAM AND RECORDING MEDIUM - A reproducing apparatus provided with identifying information acquisition means to read recording medium identify information recorded on a recording medium and a storage unit to store the recording medium identify information acquired by the identifying information acquisition means so that the recording media which have been played are registered as library information. When a recording medium is to be played, this library information is used to determine whether to allow bonus images to be reproduced.09-17-2009
20090231970Method, device and record carrier for providing media-related parameters - The method is used for determining the value of a recording parameter for writing user information on an information layer of an optical record carrier using a recording device. The method comprises the steps of: 09-17-2009
20090231969Recording/reproducing apparatus and recording/reproducing method - A recording/reproducing apparatus, for conducting edition works, such as, addition, movement, and deletion, etc., of data, onto a postscript type medium, defective management of which is conducted with using a replacement area, comprises: a media information management means for managing medium management information, which is recorded by a renewal unit within a medium management information area; a replacement address information management means for managing replacement origin/replacement destination address information, which is included within the medium management information; and an available number of times of edition works calculation means for calculating a remaining available number of times of edition works, wherein the available number of times of edition works calculation unit calculates the remaining available number of times of edition works, upon basis of remaining capacity of the medium management information area and renewal units thereof, thereby displaying or noticing a correct available number of times of edition works to a user.09-17-2009
20090010119Optical Disk Apparatus - An optical disk apparatus according to the present invention includes: a rotation driving section on which an optical disk is to be mounted and which drives the optical disk so as to be rotated; a light source; an objective lens for converging light from the light source onto an optical disk mounted on the rotation driving section; a photodetector having at least two detection sections for detecting reflected light, from the optical disk, of the light; and an error signal generation section for deriving a difference signal and a sum signal of respective outputs from the two detection sections of the photodetector, adjusting an offset in at least the sum signal among the difference signal and the sum signal, and thereafter dividing the difference signal by the sum signal whose offset has been adjusted to generate a position error signal of the objective lens.01-08-2009
20120113779METHOD FOR SENDING DATA IN OPTICAL DISC DRIVE CAPABLE OF CHANGING MODE - The present invention provides a method for sending data in an optical disc drive capable of changing mode. In one embodiment of the present invention, if a read command is received from a host connected, whether an address included in the command indicates a file system area of a predetermined file system can be checked; and if the address included in the command is found to belong to the file system area, data converted according to the predetermined file system from file information about files recorded in an optical disc can be sent to the host.05-10-2012
20110019514Recording and Reproducing Apparatus and Method - A Spare Area kept unused on a disk is available for use other than spare processing, or Defect Management process, and compatibility of the disk is at least secured between different recording apparatuses. This is implemented by recording a SWP_PAC cluster defined as a new item and by recording address information of used addresses in a PAC or TDDS area.01-27-2011
20110032808INTEGRATED CIRCUIT, INFORMATION RECORDING/REPRODUCING APPARATUS, AND SIGNAL PROCESSING METHOD - An information recording/reproducing apparatus including an optical pickup unit for generating an RF signal performs signal processing to acquire, at a restart of recording after a halt of recording, a data ID to be used as a reference for specifying a recording restart position in the recording medium based on the RF signal. The signal processing includes reproduced signal generation processing to generate a reproduced signal based on the RF signal, and data ID acquisition determination processing to determine, at the restart of recording after the halt of recording, whether or not the data ID has been properly acquired, based on the reproduced signal. If it is determined in the data ID acquisition determination step that the data ID has not been properly acquired, a reproduction parameter to be used for generating the reproduced signal in the reproduced signal generation step is adjusted.02-10-2011
20100014395Information recording medium, information recording apparatus and method, and computer program - An information recording medium such as DVD-R, DVD-RW or the like is provided with: an user information recording area in which user information can be recorded. The user information recording area has a pre-recorded area for preventing recording/reproduction of the user information, in an edge portion corresponding to a recording area portion in which reproduction control information for a read-only recording medium such as DVD-Video is recorded.01-21-2010
20110128834FILTER AND FILTERING METHOD THEREOF - A filter, including a direct-current (DC) tracking unit, a subtracter and a control unit, is provided. The DC tracking unit extracts a DC component of a radio-frequency (RF) signal and accordingly generates a level signal. The subtracter subtracts the level signal from the RF signal to generate a RF coupling signal. The control unit determines whether to transmit a setting signal to the DC tracking unit according to the level variation of the RF coupling signal, so as to adjust a characteristic parameter of the DC tracking unit.06-02-2011
20090207706Recording medium with a Linking area including dummy data thereon and apparatusand methods for forming, recording,and reproducing the recording medium - A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including dummy data, and to methods and apparatuses for forming, recording, and reproducing the recording medium.08-20-2009
20130021885OPTICAL DISC DRIVE AND METHOD OF DRIVING THE SAME - Provided are an optical disc drive and a method of driving the same. The optical disc drive may be connected to or become compatible with a host by providing device information and a file system supported by the host to the host that is not compatible with the optical disc drive. The optical disc drive and the method of driving the same become compatible with the host by transmitting information compatible with the host to the host and selecting a specific command set supported by the host.01-24-2013
20110141866TRACKING SIGNAL GENERATION DEVICE AND METHOD, REPRODUCTION DEVICE AND METHOD, AND COMPUTER PROGRAM - A tracking signal generating apparatus is provided with: a reading device for reading reflected light of a laser beam applied onto a recording medium, thereby obtaining a resulting read signal; an amplitude-limiting device for limiting an amplitude level of the read signal by a predetermined amplitude value, thereby obtaining an amplitude limit signal; a filtering device for performing a high-frequency emphasis filtering process on the amplitude limit signal, thereby obtaining an equalization-corrected signal; and a generating device for performing a phase comparison process on the equalization-corrected signal, thereby generating the tracking signal.06-16-2011
20090201778Optical Disk Playback Device - An optical disk playback device includes a control means (an LSI 08-13-2009
20090279401Recording Medium, Apparatus and Method for Recording/Reproducing Data on/From Recording Medium - A recording medium and an apparatus for recording/reproducing data on the recording medium, which are capable of controlling access to the recording medium by recording control information for controlling access for reading the data, are disclosed. When a function included in the recording medium cannot be performed, Unknown Rules are applied, and, when the function included in the recording medium can be performed, Known Rules are applied. Even in the Known Rules, a password may be used such that data reading is controlled. Accordingly, it is possible to compatibly reproduce the data from different versions of recording media. It is difficult for a user to access to the recording medium such that content protection can be improved.11-12-2009
20090129220INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING APPARATUS AND METHOD, AND APPARATUS FOR AND METHOD OF MANUFACTURING THE INFORMATION RECORDING - An information recording medium (05-21-2009
20090122671Method and apparatus for recording data on and reproducing data from a recording medium and the recording medium - In an embodiment of the method of recording data on a recording medium, a next recordable position of a recording range is notified to a host. A replacement for data requested to be recorded is performed at a first area of the recording range by recording sequentially the data requested onto a second area starting from the next recordable position instead of the first area. The first area has recorded data and the second area does not have recorded data. A management information entry is recorded onto a temporary defect management area of the recording medium. The management information entry indicates the first and second areas and includes first and second status indicators indicating a status of the management information entry. The first status indicator indicates that the replacement is performed and the second status indicator indicates a type of the replacement.05-14-2009
20090059747RECORDING CONDITION ADJUSTMENT METHOD FOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING/REPRODUCING APPARATUS - [PROBLEMS] To reduce the number of recording condition adjustment steps before information recording, simplify the recording condition adjustment procedure, and perform stable and accurate recoding condition adjustment of an information recording medium.03-05-2009
20090147640Recording medium, and method and apparatus of controlling access to the recording medium - A recording medium, and a method and apparatus of controlling an access to the recording medium are disclosed. Physical access control (PAC) information that is pre-recorded on a recording medium is extracted. Then, a PAC identification is extracted from the PAC information. An access to the recording medium is controlled using first control information that is included in the PAC information, when the PAC identification is known. Alternatively, the access to the recording medium is controlled using second control information that is included in the PAC information, when the PAC identification is unknown.06-11-2009
20100128585INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus (05-27-2010
20100080095RECORDING CONTROL METHOD, RECORDING/REPRODUCTION METHOD, RECORDING CONTROL APPARATUS AND RECORDING/REPRODUCTION APPARATUS - Information is recorded on an information recording medium by classifying recording conditions by data pattern, including at least one recording mark and at least one space, of a data stream to be recorded; wherein the classification of the recording conditions by data pattern is performed using a combination of the length of a first recording mark included in the data stream and the length of a first space located adjacently previous or subsequent to the first recording mark, and then further performed using the length of a second recording mark which is not located adjacent to the first recording mark and is located adjacent to the first space. Alternatively, the classification of the recording conditions by data pattern is performed using a combination of the length of a first recording mark included in the data stream and the length of a first space located adjacently previous or subsequent to the first recording mark, and then further performed using the length of a second space which is not located adjacent to the first space and is located adjacent to the first recording mark.04-01-2010
20100085850DISC PLAYBACK APPARATUS - A disc playback apparatus includes a decoder 15 for decoding audio files respectively corresponding to different data formats, which are stored in a storage unit, on the basis of a file attribute preset thereto, and for playing back the decoded audio files, and a control unit 16 for determining a file attribute of data read from the storage unit when starting the decoding and playback process on a basis of the file attribute set to the decoder, and for, when the file attribute differs from the file attribute set to the decoder, holding address information about the read data, and, after stopping the reading of subsequent data, changing the setting of the file attribute made for the decoder and then restarting to read the data by using the address information held thereby.04-08-2010
20100085849OPTICAL DISC DRIVE AND METHOD FOR PREPROCESSING A DISC READ OUT SIGNAL - The present invention discloses an optical drive and a method for preprocessing a disc readout signal r04-08-2010
20100080097Medium Processor and Medium Processing Method - According to one embodiment, a medium processor includes a detector, an acquiring module, a storage module, and an output module. The detector detects a data storage medium. The acquiring module acquires a use period that is set as a period during which data recorded on the data storage medium is supposed to be intact. The storage module stores identification information that identifies the data storage medium in association with the use period. The output module outputs the identification information and the use period stored in the storage module in association with each other.04-01-2010
20100080096HIGHER PERFORMACNE DVD WRITING CURRENT CIRCUIT - A writing current circuit (04-01-2010
20090274026OPTICAL STORAGE MEDIUM, INFORMATION RECORDING APPARATUS, AND INFORMATION REPRODUCING APPARATUS - An optical storage medium can be provided by which illegal usage of the optical storage medium involving an infringement on the copyright can be prevented effectively without impairment of the functions for reproducing physical format information and optical storage medium manufacturing information. The optical storage medium includes a main information region in which encrypted data information is recorded as a pit row that is capable of being read out by means of light and a control data region. In the control data region, key information for decoding the encryption of the data information, the physical format information and the optical storage medium manufacturing information are recorded by wobbling a groove.11-05-2009
20090201779Novel reading inhibit agents - Disclosed is an optical disk, card or media which comprises: a) a plurality of data structures that are readable by the interrogating beam of light; and b) a composition on or in the optical disk, card or media disposed so that when the optical disk, card or media is used in the optical read-out system, the interrogating beam of light passes through the composition before or after contacting some or all of the data structures. The composition comprises a polymeric matrix with an organometallic complex dissolved therein or with metal, transition metal, metal oxide or transition metal oxide nanoparticles uniformly dispersed therein. The composition is substantially transparent to the interrogating beam and/or is substantially colorless. Alternatively, the composition comprises a solid polymeric matrix with an olefinic compound dissolved or uniformly dispersed therein wherein double bond in the olefinic compound undergoes oxidative cleavage promoted by a transition metal catalyst and a thiophenol or a catalytic amount of a thiyl radical and wherein the composition is substantially transparent to the interrogating beam and/or is substantially colorless.08-13-2009
20090285065INFORMATION RECORDING MEDIUM, INFORMATION RECORDING DEVICE AND METHOD, AND COMPUTER PROGRAM - An information recording medium (11-19-2009
20090274025METHODS AND DEVICES FOR CONTROLLING ACCESS TO AN OPTICAL DISC - A device for controlling access to an optical disc includes a control word calculator and a numerically controlled oscillator (NCO). The control word calculator is arranged to calculate a control word corresponding to a radius where the optical disc is accessed. In addition, the NCO is arranged to generate an output frequency according to the control word, wherein the output frequency is utilized for accessing the optical disc. An associated method for controlling access to an optical disc includes: calculating a control word corresponding to a radius where the optical disc is accessed; and generating an output frequency according to the control word, wherein the output frequency is utilized for accessing the optical disc.11-05-2009
20090279399OPTICAL HEAD AND OPTICAL DISC DEVICE - A tilt can be detected highly accurately by minimizing the tilt detection error. An optical head includes: an objective lens for converging a light beam from a light source onto an optical disc; a photodetector section receiving the beam, reflected from the disc, at divided areas on its photodetection plane and outputting light detection signals from those areas; and a tilt detecting section for detecting a relative tilt between the lens and disc based on the detection signals. The tilt detecting section generates a first push-pull signal PP11-12-2009
20090279400INFORMATION REPRODUCING DEVICE AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus (11-12-2009
20090040890Information recording/reproduction apparatus, information recording method and information recording medium - Provided is a recording/reproduction apparatus capable of securing a backup area for management information on a recording medium without affecting the capacity of a user data area. Before a hard disk drive or a disc medium (recording medium) is finalized, metadata is recorded in a metadata area and when the hard disk drive or the disc medium are finalized, a user data area portion corresponding to the volume of metadata required for the finalizing is set as a metadata mirror area and then the metadata recorded in the metadata area is copied to the metadata mirror area.02-12-2009
20110205876OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE, METHOD FOR CONTROLLING THE DEVICE, OPTICAL INFORMATION RECORDING AND REPRODUCING PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM - The present invention provides an optical information recording medium (08-25-2011
20100103789REPRODUCING SYSTEM AND CORRESPONDING INFORMATION RECORDING MEDIUM HAVING WOBBLED LAND PORTIONS - An information recording medium is at least composed of a substrate having a microscopic pattern constituted by a continuous substrate of grooves formed with a groove portion and a land portion alternately, a recording layer formed on the microscopic pattern for recording information, and a light transmitting layer formed on the recording layer. The microscopic pattern is formed with satisfying a relation of P≦λ/NA, wherein P is a pitch of the land portion or the groove portion, λ is a wavelength of reproducing light for reproducing the recording layer, and NA is a numerical aperture of an objective lens. The land portion is formed with wobbling so as to be parallel with each other for both sidewalls of the land portion. An auxiliary information based on data used supplementally when recording the information and a reference clock based on a clock used for controlling a recording speed when recording the information is recorded alternately. Information is recorded in the recording layer corresponding to only a land portion by at least either one change of reflectivity difference and refractive index difference in the recording layer so as to be more than 5% for reflectivity and so as to be more than 0.4 for modulated amplitude of signal recording.04-29-2010
20100103788OPTICAL DISC, OPTICAL DISC RECORDING METHOD AND APPARATUS, AND OPTICAL DISC REPRODUCING METHOD AND APPARATUS - As a synchronization signal pattern to be added, a pattern is generated (second SYNC pattern), which has a pattern that breaks a maximum run inserted in a pattern excluding a minimum run is used so that intersymbol interference does not occur readily on a high-density disc, and addition processing of a conventional synchronization signal pattern (first SYNC pattern) is switched according to identification information indicating whether or not a high-density disc for generation.04-29-2010
20100278021CONTROLLING AN OPTICAL-DISC READER USING SURFACE MARKS - An optical-disc player having a reader and a controller. The reader derives out-of-band information from surface marks of an optical disc, where the controller controls operations of the reader based on the derived information. The controlled operations may involve the reading and rendering of embedded data of the optical disc. For example, a person writes the words “Spanish” and “widescreen” on the surface of a DVD with a marker and inserts the DVD in a DVD player. The DVD player scans the surface of the DVD and sends the resulting image data to an optical character recognition (OCR) module. The OCR module outputs a text file containing the words “Spanish” and “widescreen” to a controller (e.g., Microsoft HDi runtime). In response, the controller sets the playback language to Spanish and the screen format to widescreen.11-04-2010
20100142342INFORMATION STORAGE MEDIUM, AND RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD - An information storage medium and a recording/reproducing apparatus and method are provided with the ability to extend at least one middle area of an information storage medium comprising two or more recording layers so as to ensure optimal data recording/reproduction. The information storage medium comprises a plurality of recording layers, each including a user data area for recording user data and at least one middle area used by a recording/reproducing apparatus that records/reproduces data on the information storage medium to move among two recording layers, wherein the at least one middle area is extended when the information storage medium is finalized. As a result, when an information storage medium that contains an OPC area for obtaining optimum recording conditions (such as recording power) in an outer circumference thereof is finalized, and if a middle area of the disk is not large enough, the middle area can flexibly be extended.06-10-2010
20090003159OPTICAL DISK APPARATUS AND OPTICAL DISK RECORDING METHOD - According to one embodiment, there is provided an optical disk apparatus including a recording unit which irradiates an optical disk with a laser beam to record information in a first format and a second format, a generation unit which generates warning information to an optical disk apparatus capable of performing a read process in the second format while being not capable of performing the read process in the first format, the warning information warning that information is recorded in the first format in the optical disk, and a control unit which controls the recording unit to record the warning information in the second format in the optical disk apparatus when the information is recorded in the first format in the optical disk.01-01-2009
20090003158Writing method for optical disk drive - A writing method for an optical disk drive includes the following steps. First, a write command and to-be-written data are received from a host. Next, a speed down flag is checked. If the speed down flag is true, a writing speed is decreased; or otherwise the to-be-written data is written into a data area. Next, the written data is read, and accuracy of the written data is verified. If the written data is not accurate, accurate data is re-written into a spare area, and the number of times of re-writing is counted and checked. If the number of times of re-writing is greater than a predetermined threshold value, the speed down flag is changed to true; or otherwise the procedure goes back to the data-writing step to repeat the above-mentioned steps. If the written data is read and verified as accurate, a write-end status is reported back to the host.01-01-2009
20090003157Information Recording Medium, and Information Reproducing Apparatus and Method - An information recording medium includes a reproduction-dedicated area (01-01-2009
20120287766OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE - When performing recording/reproduction of information for a given recording layer of an optical disc having three recording layers, influences of reflected light from other recording layers are reduced or removed, thus making it possible to obtain a more stable RF signal or focus error signal.11-15-2012
20080279063Drive Device - A drive apparatus of the present invention includes: a recording/reproduction section, a drive control section and a memory circuit. The drive control section performs a process including: receiving a recording instruction specifying at least data to be recorded; storing the data to be recorded in the memory circuit; defining data from a start location of the data stored in the memory circuit to a location corresponding to a next writable address as a first data portion; defining data from the location corresponding to the next writable address to an end location of the data stored in the memory circuit as a second data portion; and controlling the recording/reproduction section to record the second data portion before recording the first data portion.11-13-2008
20080304379Writing and Reading of Data in Probe-Based Data Storage Devices - Methods and apparatus are provided for controlling writing and reading of data in an array of A storage fields of a probe-based data storage device in which data is written to and read from the array of storage fields by a corresponding array of probes. One method uses the concept of sub-arrays to provide variable-rate read/write operation. Input data blocks are received for writing to the A-field array, each input data block being writable in A/k12-11-2008
20080310266Recording Device - A recording device is equipped with an input unit for inputting information data, a memory for storing the input information data, a writing unit for reading the information data stored in the memory, and writing the information data read from the memory on a disk-like recording medium having plural recording layers, and a control unit for changing a writing procedure by the writing unit, in accordance with a difference between a writing position on the disk-like recording medium by the writing unit and a position on the disk-like recording medium where the recording layer is to be transitioned, coming to a predetermined value.12-18-2008
20080310267Information processing apparatus, information processing method and computer program - An information processing apparatus includes a storage section storing subsequent data subsequently acquired or generated as data corresponding to a medium stored content, a control section executing a management process of managing subsequent data with respect to the storage section, the control section being configured to execute, as the management process of the subsequent data, a process of generating and recording subsequent data descriptive information including medium identification information corresponding to subsequent data and title identification information at a time of executing a process of recording subsequent data in the storage section, a process of generating display data based on the subsequent data descriptive information, and a process of reproducing or deleting subsequent data based on user designation information for the display data based on the subsequent data descriptive information.12-18-2008
20100142339DISK DEVICE AND DISK DRIVE CONTROLLING METHOD - A disk device includes a main control unit controlling the operation of a controlled object on the basis of an error signal calculated from a target signal of the controlled object and an observation signal of the controlled object, a repetitive control unit sampling the error signal with a sampling clock pulse to obtain a repetitive signal component generated in synchronization with rotation of the disk medium from the sampled error signal, a sampling clock generation unit generating the sampling clock pulse and resetting a timing at which the sampling clock pulse is generated in accordance with a rotation detecting pulse and a sampling clock limit unit limiting generation of the sampling clock pulse at a timing immediately before generation of the rotation detecting pulse.06-10-2010
20100142338INFORMATION RECORDING MEDIUM AND RECORDING/REPRODUCTION APPARATUS - An information recording medium according to the present invention includes a track on which a data sequence including a plurality of recording marks and a plurality of spaces provided between the plurality of recording marks is recordable; and a recording condition recording area in which a recording condition for recording the data sequence on the track is recordable. Where a recording mark which is included in the data sequence and is to be formed on the track based on the recording condition is a first recording mark, when a length of the first recording mark is longer than a prescribed length, the recording condition is classified using a combination of the length of the first recording mark and a length of a first space located adjacently previous or subsequent to the first recording mark, and when the length of the first recording mark is equal to or shorter than the prescribed length, the recording condition is classified using a combination of the length of the first recording mark, the length of the first space, and a length of a second space not located adjacent to the first space and located adjacent to the first recording mark.06-10-2010
20090080299CONTROL METHOD OF OPTICAL DISC DRIVE - The present invention provides a control method of an optical disc drive, including the steps of: (a) entering a writing state; (b) checking if a reading command for requesting recorded data is received, wherein when the reading command is not received, then continuing a writing process, and when the reading command is received, then going to step (c); (c) interrupting the writing process; (d) switching to a reading state; (e) reading the recorded data according to the reading command; and (f) switching to the writing state.03-26-2009
20110267933CODING FOR OPTICAL STORAGE SYSTEMS WITH MULTIPLE READER HEADS AND MULTIPLE OPTICAL DISKS - Provided are methods and systems of encoding and decoding techniques in an optical storage system having a multi-head detector. In one embodiment, source data may be encoded using error correction coding (e.g., turbo coding) techniques, and the encoded data may be interleaved and distributed to more than one detector head of the multi-head detector. Data recorded in an optical disc may be retrieved by the multi-head detector, and a read data from more than one detector head may be concurrently decoded to retrieve estimates of the original information in the source data. Further, more than one encoder/decoder may be used, and each encoder/decoder may encode or decode data from multiple data heads. Some embodiments also include replicating multiple discs.11-03-2011
20090245046RECORDING DEVICE FOR RECORDING A CONTENT INTO A PLURALITY OF RECORDING MEDIA AND CONTROL METHOD THEREOF - A recording device records contents in a plurality of recording media. While the recording device records a content in a recording medium, if a free space of the recording medium runs out, an unrecorded part of the content needs to be recorded in another recording medium. In order to play back all parts of the content, all recording media in which all the parts of the content have been separately recorded are necessary. Particularly, if an internal recording medium included in the recording device has a small space and accordingly a sufficient space is secured by connecting an external removable recording medium to the recording device after the recording has started, parts of the content are separately recorded in the internal recording medium and the external recording medium. As a result, even if the external recording medium is removed from the recording device and is connected to a playback device in order to play back all the parts of the content, it is possible to play back only one part of the content. In order to play back all parts of the content using another playback device, a user needs to edit the separately recorded parts of the content so as to be saved in a single recording medium. In view of this problem, the present invention aims to provide a recording device that controls a recording destination of a content to be recorded such that the content can be recorded in a single recording medium for as long as possible.10-01-2009
20090219795Optical Head and Optical Disk Drive - An optical head reduces, upon signal reproducing from a recording layer of an optical disc (09-03-2009
20090257329INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS AND METHOD, INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information recording medium is provided with: a first recording layer in which one portion of record information including predetermined data can be recorded, the predetermined data being (i) capable of setting a recording layer close to a physically or optically recorded state, and (ii) capable of setting the recording layer close to a buffer state for finalizing; and a second recording layer in which another portion of the record information can be recorded by laser light transmitted through the first recording layer, the information recording medium is provided with a management area in which management information can be recorded, the management information including (iii) identification information indicating whether or not there is a predetermined data recording area in which the predetermined data can be recorded, (iv) position information of the predetermined data recording area, and (v) attribute information of the predetermined data recording area.10-15-2009
20090257330OPTICAL DISC DRIVE APPARATUS AND ITS CONTROL METHOD - An optical disc drive apparatus which is mounted on a mobile apparatus, which at least reads information from a disc surface of an optical disc disposed in a predetermined position by using a pickup, which is robust against vibration, and which is capable of preventing collision between the disc surface of the optical disc and the pickup judges a road surface condition associated with location information on the basis of the location information concerning a location on a road on which the mobile apparatus is traveling acquired from external and road surface condition information depending upon a road surface condition of a road on which the mobile apparatus travels, and controls servo characteristics of the optical drive apparatus according to control information associated with the judged road surface condition.10-15-2009
20100149938INFORMATION RECORDING/REPRODUCING APPARATUS, INFORMATION RECORDING/REPRODUCING METHOD, PROGRAM STORAGE MEDIUM, AND PROGRAM - An information recording/reproducing apparatus is disclosed which includes: a recording section for recording files to a storage medium; an arranging section for arranging the files into groups by attribute so as to establish allocation of the files on the storage medium; and a controlling section for controlling the recording section so as to record the files to the storage medium based on the allocation established by the arranging section and to record concurrently allocation information reflecting the allocation to a predetermined location on the storage medium.06-17-2010
20100046339OPTICAL DISC RECORDING/REPRODUCTION APPARATUS - The present invention solves the problems that, in a detection circuit which is mostly configured by analog circuits, the chip size cannot be reduced even using a highly-precise processing, there are many external capacitors and terminals thereof, a plurality of high-speed and large-scale AD converters are required for digitization, the detection precision of a small amplitude signal superimposed on an RF signal is deteriorated, and high-speed sample/hold is required.02-25-2010
20100157753METHOD FOR REPRODUCING A SIGNAL FROM AN OPTICAL DISC, AND OPTICAL DISC DRIVE - An optical disc drive includes: a means (06-24-2010
20100157754DATA RECORDING METHOD AND DATA RECORDING DEVICE FOR WRITE-ONCE TYPE RECORDING MEDIUM - In a data recording method for a write-once type recording medium capable of pseudo overwrite, it is judged whether data to be recorded in the write-once type recording medium exists. If it is judged that data exists, it is judged that the data is to be recorded from the next writable address (NWA) indicating the boundary between a recorded area and non-recorded area. If it is judged that the data is to be recorded from the next writable address, the data is recorded from the next writable address; and if it is judged that the data is not to be recorded from the next writable address, recording of the data is suspended. While data to be recorded exists, the aforementioned steps are repeated. If no data to be recorded exists, the data whose recording has been suspended is recorded.06-24-2010
20100002551Reconfiguration controlling apparatus for optically reconfigurable gate array and method thereof - To provide a reconfiguration controller of an optically reconfigurable gate array for correctly and reliably writing various types of logical operation circuits of an optically reconfigurable gate array and performing high-speed logical operation by quickly starting up the circuits. [MEANS FOR SOLVING PROBLEMS] A reconfiguration controller comprises a laser array (01-07-2010
20100014396DRIVE APPARATUS, DRIVE METHOD, PROGRAM, AND RECORDING MEDIUM - A drive apparatus includes n optical pickups, n control units, each controlling a corresponding one of the n optical pickups, and a communication unit that allows the n control units to communicate with one another.01-21-2010
20100165808INFORMATION STORAGE MEDIUM, INFORMATION READ/WRITE DEVICE, COORDINATION SYSTEM, CONTROL PROGRAM FOR THE DEVICE OR SYSTEM, AND COMPUTER-READABLE STORAGE MEDIUM - There are provided at least a first information storage area 07-01-2010
20100149936OPTICAL HEAD APPARATUS AND OPTICAL DISC APPARATUS - In an optical head apparatus and an optical disc apparatus which can reduce influence of interlayer stray light on a differential push-pull signal without making the configuration complicated, U06-17-2010
20100149937MULTI-LAYERED OPTICAL DISK AND OPTICAL DISK DEVICE - There are provided a multi-layered optical disk and an optical disk device capable of swiftly reproducing control information recorded into a predetermined recording layer in advance. The object can be accomplished by employing the following configuration: When the optical disk device performs a focus lead-in operation into the multi-layered optical disk, the device positions its optical pickup at a BCA radius position, and takes advantage of a signal which is generated such that an influence exerted on the signal by BCA is avoided. Also, the object can be accomplished by employing the following configuration: An angle index unit for indicating a rotation reference position is provided in the multi-layered optical disk, and a partial area of the BCA is selected as an unrecording area. The optical disk device starts the focus lead-in operation in synchronization with rotation angle information created from the rotation reference position.06-17-2010
20100157756OPTICAL DISC APPARATUS AND OPTICAL DISC DRIVE CONTROL METHOD - A movement speed of a lens included in an optical pickup is calculated by differentiating a total reflection return light quantity that is detected by emitting laser light and near-field light onto a signal recording surface of a rotationally driven optical disc. On the basis of the calculated movement speed, processing for driving the optical pickup or the lens included in the optical pickup is controlled. For example, in a case where the calculated movement speed exceeds a permissible speed set in advance, retreat processing is performed for moving the optical pickup or the lens included in the optical pickup apart from a surface of the optical disc.06-24-2010
20100157755OPTICAL RECORDING/REPRODUCING METHOD, SYSTEM, AND PROGRAM - A data recording/reproducing system (06-24-2010
20100002553DRIVING DEVICE AND METHOD, PROGRAM, AND RECORDING MEDIUM - A driving device includes an optical pickup unit that irradiates a disc having a plurality of recording surfaces with a laser beam used for recording or reproducing information, and a generating unit that generates a focus control signal used for controlling a focus state of the laser beam emitted from the optical pickup unit on the basis of a focus error signal. The generating unit includes level detector that detects a level of the focus error signal, an offset generator that generates an offset signal used for performing focus jumping from one of the plurality of recording surfaces to another one of the plurality of recording surfaces in accordance with the focus error signal, and a switcher that switches a polarity of the focus control signal by comparing the level of the focus error signal of the level detector with a threshold value.01-07-2010
20100002552OPTICAL DISK APPARATUS AND TILT CONTROL METHOD THEREOF - An optical disk apparatus which can carry out tilt control using a signal of a focus control system so as to improve the recording/reproducing performance of an optical disk. The optical disk apparatus includes a motor which rotates the optical disk, an optical pickup which reads at least information from the optical disk being rotated by the motor, a first memory which uses information of a rotation angle of the optical disk from the optical pickup as an address, a second memory which stores an offset by which information stored in the first memory should be shifted and then read, and a control portion which reads the information stored in the first memory after shifting the information by the offset stored in the second memory and which carries out tilt control using the read information.01-07-2010
20100165809INFORMATION RECORDING MEDIUM, AND APPARATUSES FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF, AND METHODS FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF - An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be recorded in the second recording layer, and a first light transmitting layer. The second recording layer is formed with a continuous second microscopic pattern of grooves. The first recording layer is formed with a continuous first microscopic pattern of grooves that is different from the second microscopic pattern. Both sidewalls of raised portions of the first and second microscopic patterns are formed with wobbling so as to be parallel with each other. Auxiliary information and a reference clock is recorded on these sidewalls alternately and continuously.07-01-2010
20090316543OPTICAL PICKUP, OPTICAL INFORMATION REPRODUCING APPARATUS AND OPTICAL INFORMATION REPRODUCING METHOD - An optical pickup includes: a light source that emits first light; an objective lens that condenses the first light and allows it to irradiate a track having formed therein a recording mark for intercepting the first light in a uniform recording layer of an optical information recording medium; and a light receiving section that receives transmitted light which has transmitted through the track.12-24-2009
20100226222METHOD FOR EMULATING OPTICAL DISK, OPTICAL DISK DRIVE USING THE SAME, AND OPTICAL DISK INCLUDING SECURITY ZONE - Provided are a method for emulating a separate contents memory unit into an optical disk, an optical disk drive using the same, and an optical disk including a security zone. In the method, when an optical disk processing command from a host is present, whether an optical disk is present in the optical disk drive is judged. When the optical disk is not present in the optical disk drive as a result of the judgment, the contents memory unit is executed as a virtual optical disk. An application stored in the contents memory unit is displayed. The optical disk drive includes an optical disk storage unit, a contents memory unit, and a controller. The optical disk storage unit stores or reproduces contents using an optical disk. The contents memory unit stores contents therein and is executed as a virtual optical disk when the optical disk is not present. The controller controls the optical disk storage unit and the contents memory unit, and controls an access to be made, subject to the contents memory unit. The optical disk includes a fake zone that is accessible by all users without an authentication procedure, and a security zone that is accessible through the authentication procedure. Accordingly, a user can receive and use desired contents using the optical disk drive even when a disk is not present.09-09-2010
20100226221APPARATUS AND METHOD FOR GENERATING RADIO FREQUENCY RIPPLE ZERO CROSSING SIGNAL - A method for generating an RFZC signal is disclosed. The method includes the following steps. First, an RF signal is received and the received RF signal is converted into an RF-ENVLP signal. Next, a DC offset of the RF signal is calibrated according to a variation of the RF-ENVLP signal so as to obtain a calibrated RF-ENVLP signal and obtain a gain according to the calibrated RF-ENVLP signal. Then, an RFZC signal is generated according to the calibrated RF-ENVLP signal and the gain.09-09-2010
20100157752METHOD AND APPARATUS FOR OPTICAL DISC WRITING - The present invention provides a method and apparatus for optical disc writing. The method provided by the present invention comprises steps: acquiring the writing history information of the optical disc, wherein the data storage area of the optical disc is divided into several writing areas by starting address and ending address of each writing in the history information; selecting a writing area from the plurality of writing areas for the current optical disc writing; determining the write strategy for the optical disc adopted by the current writing for writing the optical disc; and updating the writing history information of the optical disc. According to the method provided by the present invention, the appropriate area can be selected to carry out the optical disc writing, so that the life cycle shortening of the optical disc due to the over-usage of partial recording areas will be avoided, furthermore, the appropriate write strategy can be determined to improve the optical disc writing effects.06-24-2010
20100226223RECORDING AND REPRODUCING APPARATUS AND RECORDING AND REPRODUCING METHOD - A recording and reproducing apparatus includes a drive unit that reads data from a first medium and a drive unit control unit that controls the drive unit. The apparatus includes a second medium in which the same amount of data as the amount of data recorded in the first medium can be stored, and from or in which data is read or written at a speed higher than a speed at which data is read or written from or in the first medium. The apparatus further includes an input/output unit that inputs a reading request with which predetermined data is read from among data items stored in the first medium or second medium. The apparatus also includes an access control unit which controls the drive unit control unit or a second medium control unit.09-09-2010
20100246347OPTICAL PICKUP DEVICE, OPTICAL INFORMATION DEVICE, COMPUTER, OPTICAL DISK PLAYER, CAR NAVIGATION SYSTEM, OPTICAL DISK RECORDER, AND OPTICAL DISK SERVER - An object of the invention is to prevent damage or performance degradation of an optical component constituting a second optical system, and suppress degradation of the recording/reproducing performance of an optical pickup device. A first laser light source 1 emits a first light beam having a first wavelength. A first optical system 09-30-2010
20100208559RECORDING MEDIUM, DATA RECORDING APPARATUS AND METHOD, DATA PLAYBACK APPARATUS AND METHOD, PROGRAM, AND RECORDING MEDIUM - The present invention enables audio data to be recorded or played back more easily. LPCM samples from an LPCM sample 08-19-2010
20100142343INFORMATION STORAGE MEDIUM, AND RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD - An information storage medium and a recording/reproducing apparatus and method are provided with the ability to extend at least one middle area of an information storage medium comprising two or more recording layers so as to ensure optimal data recording/reproduction. The information storage medium comprises a plurality of recording layers, each including a user data area for recording user data and at least one middle area used by a recording/reproducing apparatus that records/reproduces data on the information storage medium to move among two recording layers, wherein the at least one middle area is extended when the information storage medium is finalized. As a result, when an information storage medium that contains an OPC area for obtaining optimum recording conditions (such as recording power) in an outer circumference thereof is finalized, and if a middle area of the disk is not large enough, the middle area can flexibly be extended.06-10-2010
20090231968RECORDING MEDIUM STORING MANAGEMENT INFORMATION FOR CONTENT ATTRIBUTE AND RECORDING DEVICE AND PLAYBACK DEVICE FOR THE RECORDING MEDIUM - A semiconductor recording medium stores attribute management information for managing various attribute information on a content (genre, composer, artist, album, title, etc.) for each item; and sort management information managing information on a sort order when information managed by the attribute management information is sorted by a predetermined procedure. The attribute management information contains character data indicating items to be managed and pointer information indicating link relationship between the attribute management information. The sort management information contains information on the sort order when all the entries in each of attribute management information are sorted by a predetermined procedure for each of attribute management information.09-17-2009
20090323488INFORMATION-PROCESSING APPARATUS, DEVICE, AND DEVICE SETTING CONTROL METHOD - According to one embodiment, an information processing apparatus includes one or more devices, a device control module which performs drive control of the one or more devices, and a nonvolatile memory. Each of the one or more devices includes a command reception module which receives from the device control module a command to cause the nonvolatile memory to store operation setting information, a setting module which performs, when the operation setting information has been stored in the nonvolatile memory at the time of power-on or resetting, operation setting based on the information, and an erasing module which erases the information stored in the nonvolatile memory after the setting means has completed the operation setting. The device control module includes a command issuing module which issues to the one or more devices a command to cause the nonvolatile memory to store operation setting information before power-off or resetting.12-31-2009
20090073829HYBRID LASER DIODE DRIVERS - A hybrid LDD includes a read channel to selectively output a read current, a plurality of write channels, each to selectively output a different write current, and an oscillator channel to selectively output an oscillator current. Additionally, the hybrid LDD includes programmable LDD controller that receives the plurality of enable signals from the external controller, and based on the enable signals, controls timing of the currents output by at least the write channels. The programmable LDD controller can also control timing of the currents output by the read and oscillator channels, based on the enable signals. Further and alternative embodiments are also provided.03-19-2009
20090073828RECORDING MEDIUM PLAYBACK DEVICE AND METHOD THEREOF - When playback of a recording medium, which stores content data that is only allowed to be played back for a limited number of times, is forcibly terminated due to a scratch on the recording medium, the playback of the content data residing at a subsequent location that follows a location having the scratch is performed without the number of playbacks being counted, and without a particular operation such as skip. Upon the playback after the forced termination, an address of an optical disk at which the playback was performed at the time of the forced termination is stored in a RAM unit. The address stored in the RAM unit is read out, and the content data residing at a subsequent address that follows the read address in terms of a predetermined number of addresses is played back. When data residing at the subsequent address that follows the read address cannot be read, the playback is repeated for a predetermined number of times for other addresses that follow the previous address at intervals in terms of the predetermined number of the addresses.03-19-2009
20090161508INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS AND METHOD, INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information recording medium is provided with: a recording layer (L0 layer, L1 layer) having one or a plurality of predetermined recording areas (CDZ, 06-25-2009
20110032807OPTICAL PICKUP DEVICE AND OPTICAL DISK DEVICE INCLUDING THE SAME - An optical pickup device is provided. In an optical pickup device, a light receiving element has light receiving regions for focusing as part of the plurality of light receiving regions. A diffraction element has diffraction regions for focusing as part of the plurality of diffraction regions. A part of division lines which define the diffraction region for focusing is formed in a shape which is convex from the outer side toward the inner side with respect to the center of the incidence range on the diffraction element where a returning light beam enters. The part of the division lines formed in the shape which is convex from the outer side toward the inner side divides an incidence range on the diffraction element where a returning light beam enters, regardless of whether or not there is a focus error.02-10-2011
20100322049OPTICAL DISC DRIVE DEVICE - A plurality of drive units are divided into two groups and controlled. While almost a half of the drive units perform recording on or reproducing from a recording layer in a first format, remaining almost half of drive units perform recording on or reproducing from a recording layer in a second format.12-23-2010
20100322048Systems and Methods for Codec Usage Control During Storage Pre-read - Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing circuit is disclosed that includes an increased iteration enable signal, a first detector circuit, a second detector circuit, and a data decoding circuit. The first detector circuit receives a data set and performs a data detection on the data set to provide a detected data set. The data decoding circuit receives a derivative of the detected data set and performs a decoding process to provide a decoded data set. The decoded data set is provided to the second detector circuit based at least in part on an assertion level of the increased iteration enable signal.12-23-2010
20110110210INFORMATION DETECTION DEVICE AND OPTICAL DISC DEVICE - An information detection device includes an equalizer that equalizes the readout signal to a PR channel having equalization target levels of four or more values, and a Viterbi detector. The Viterbi detector generates branch metrics with the equalization target levels as reference levels to determine recording data from an output of the equalizer. The Viterbi detector has a mode of generating the branch metrics and determining the recording data by limiting at least one out of a maximum value and a minimum value of the equalization target levels.05-12-2011
20090067302OPTICAL PICKUP DEVICE, OPTICAL RECORDING/REPRODUCING APPARATUS AND GAP-CONTROL METHOD - An optical pickup device is provided. The optical pickup device includes a light source, a focusing optical system configured to irradiate an optical recording medium with near-field light, a light-detecting unit configured to detect a total-reflection return-light quantity from the optical recording medium, a control unit configured to generate a control signal in response to a detection signal supplied from the light-detecting unit, and a drive unit configured to drive the focusing optical system to a predetermined position above the optical recording medium. The control unit feeds forward a push-pull signal in a traveling direction of the drive unit relative to the optical recording medium to a gap-error signal supplied from the light-detecting unit to generate a gap-servo signal. The control unit includes a repetitive controller storing a predetermined number of the push-pull signals.03-12-2009
20110110209OPTICAL INFORMATION MEDIA, SYSTEMS, AND METHODS FOR PROVIDING UBIQUITOUS READ AND SELECTIVE WRITE - An optical information media, system, and method for providing ubiquitous reading and selective writing is disclosed. By placing data structures representing a nonstandard book type in byte “0” of the media, the media is made universally bootable and universally readable in substantially any DVD drive. On the other hand, data structure representing a version code or disc category is placed in byte “0” or another byte of the control data zone in order to identify the media and enable writing in select drives. The version code and/or disc category identifies the media and calls for one or more write strategies configured for writing to the particular media. When the media is a permanent storage media, loss of data can be avoided, ubiquitous read can be achieved, and selective write in predetermined drives can be achieved resulting in a robust system and method of storing and retrieving data.05-12-2011
20110026384INFORMATION RECORDING APPARATUS AND INFORMATION RECORDING METHOD - An information recording apparatus for recording additional content on a medium on which a title including one or more files is already recorded, includes means for designating a title to be added on the medium; means for transmitting disc package information, the disc package information and unique IDs; means for receiving and additionally recording on the medium the title to be added generated in the content server, file names of files so as not to be the same as the file names of the files constituting the titles already recorded on the medium; means for receiving and additionally recording a new title for display of a menu screen on the medium, which is generated in the content server, so that the title to be added can be selected, on the basis of the disc package information; and means for receiving and additionally recording new disc package information on the medium.02-03-2011
20110026383REPRODUCED SIGNAL EVALUATION METHOD AND WRITE ADJUSTMENT METHOD - The present invention aims to provide a reproduced signal evaluation method and a write adjustment method for offering a Blu-ray disc having a large storage capacity with excellent media compatibility. An evaluation index L-SEAT is calculated through signed addition using a Euclidean distance difference calculated from at least one of target signals in which a focused edge is shifted to the right and left, and the quality of the reproduced signal is evaluated based on the evaluation index. Write condition adjustment using the index enables write adjustment not depending on SNR and achieving high adjustment accuracy.02-03-2011
20110090773APPARATUS FOR GENERATING VITERBI-PROCESSED DATA USING AN INPUT SIGNAL OBTAINED FROM READING AN OPTICAL DISC - An apparatus for generating Viterbi-processed data using an input signal obtained from reading an optical disc includes a Viterbi decoding unit and a control circuit. The Viterbi decoding unit is arranged to process the input signal and generate the Viterbi-processed data. In addition, the control circuit is arranged to control at least one component of the apparatus based upon at least one signal within the apparatus. Additionally, the component includes a phase locked loop (PLL) processing unit, an equalizer, and/or the Viterbi decoding unit. An associated apparatus including an equalizer and a Viterbi module is further provided. An associated apparatus including a Viterbi decoding unit and a control circuit is also provided. An associated apparatus including an equalizer, at least one offset/gain controller, and a Viterbi module is further provided. An associated apparatus including an equalizer, a Viterbi module, and a peak/bottom/central (PK/BM/DC) detector is also provided.04-21-2011
20100226220Method and Apparatus for Closing Recording Range, Method and Apparatus for Closing Recording Medium, Method and Apparatus for Recording Management Information, Method and Apparatus for Recording/Reproducing Data On/From Recording Medium, and Recording Medium - A method and apparatus for closing a recording range, a method and apparatus for closing a recording medium, a method and apparatus for recording management information, a method and apparatus for recording/reproducing data on/from a recording medium and a recording medium are disclosed. The method of closing a recording medium includes: determining a position in which recognition information is to be recorded; recording valid data located after the determined position into an unrecorded area before the guard area; and recording the recognition information in the determined position. It is possible to reproduce recording media having different versions with compatibility using the recording medium and the method of recording/reproducing the data on/from the recording medium and to reduce a time consumed for closing the recording medium.09-09-2010
20110063959LOADER MODULE OF AN OPTICAL ACCESS APPARATUS - A loader module of an optical access apparatus is provided. The optical access apparatus has a main control printed circuit board (PCB). The loader module comprises an optical pick-up head, a drive unit, a first signal line, a second signal line and a non-volatile memory (NVM). The first signal line is configured to electrically connect the optical pick-up head, the drive unit and the main control PCB. The second signal line is configured to electrically connect the NVM and the main control PCB. The NVM is configured to store control information. The control information is transmitted to the main control PCB via the second signal line so that the main control PCB can control the loader module.03-17-2011
20090147639OPTICAL DISK UNIT AND DRIVING METHOD THEREFOR - An optical disk drive according to the present invention has the ability to read data from multiple types of optical disks, each of which includes at least one information storage layer. The drive includes: a driving mechanism 06-11-2009
20100260021INFORMATION RECORDING APPARATUS, INFORMATION RECORDING METHOD, AND INTEGRATED CIRCUIT - An information recording apparatus includes a recording access setting section that executes an operation for setting parameters to be applied during a period of time that the recording section executes a recording operation, prior to the recording operation, and a successive recording control section that controls the verification section and the recording section such that a verification operation for recorded data and the recording operation for data to be recorded next are executed successively. The successive recording control section controls the recording access setting section such that the recording access setting section simultaneously executes the setting operation for the recording operation to be executed for the data to be recorded next in the period of time that the verification section executes the verification operation.10-14-2010
20100034064OPTICAL DISK DEVICE AND OPTICAL DISK PROCESSING SYSTEM - An optical disk device which flexibly and efficiently executes verification of recorded data is provided. A drive controller sets an area to be verified and a mode of verification according to a command which is supplied from a host device. For the area to be verified, the user selects one or a plurality of lead-in, inner, middle, and outer areas. For the verification mode, the user selects one of an immediate execution mode and an in-close-command execution mode. In a duplicator or the like in which same data is recorded on a plurality of optical disks, the user can designate an important data portion and selectively execute verification.02-11-2010
20090323487OPTICAL DISK DRIVE AND METHOD FOR DATA RECORDING OF OPTICAL DISK DRIVES - The invention provides a method for data recording of an optical disk drive. First, raw data is encoded to obtain a plurality of recording units of encoded data to be stored in a memory. The encoded data stored in the memory is then recorded to an optical disk. A predetermined number of recording units of the encoded data is then reserved in the memory as reserved data without being recorded onto the optical disk. The recorded data read from the optical disk is then compared to the corresponding encoded data stored in the memory to verify correctness of the recorded data. The reserved data is then recorded to the optical disk after correctness verification of the recorded data is completed. Finally, the aforementioned steps are repeated until there is no more raw data left as a source for encoding.12-31-2009
20100054096REPRODUCTION APPARATUS, CONTROL PROGRAM, RECORDING MEDIUM, AND CONTROL METHOD FOR CONTROLLING REPRODUCTION OF CONTENT - A program execution unit for executing a reproduction control program for controlling reproduction of a content, a reproduction control unit for controlling reproduction of the obtained content based on a control instruction from the program execution unit based on a content reproduction control instruction from a user, and a notification unit for giving notification based on a result of determination as to whether content reproduction control by the reproduction control unit is control corresponding to the reproduction control instruction or not are included.03-04-2010
20100061204OPTICAL DISK AND OPTICAL DISK APPARATUS - A disk has a plurality of recording layers in a laminated direction. When a defect occurs in any one of recording layers during disk manufacture, information about the defect is recorded in a read-only region in the recording layer. An optical disk apparatus determines which of the recording layers is usable based on the information about the defect read from the disk, and executes a recording/reproducing operation according to a determination result. Therefore, even when a disk with a defect in the recording layer is used, that disk may be offered to a user as an appropriately usable disk.03-11-2010
20100135134SYSTEMS AND METHODS FOR RECORDING OPTICAL INFORMATION - A system controlling recording on an optical disc is provided. A first counter performs a bit count according to provided channel bit clock signals. A second counter performs a sector count responsive to the bit count obtained by the first counter. The Land/Groove switch predicts machine uses the result of bit count and sector count to predict the land/groove switch point. The processor uses the physical ID (PID) to determine the track type of a sector at which a recording operation initiates. The power controller determines a recording power for the recording operation according to the Land/Groove switch predict machine.06-03-2010
20090028016OPTICAL DISK DRIVE - An optical disk drive that performs logical overwrite and that enables reconstitution of arbitrary data acquired before logical overwrite. When data are written over a recorded area, the data are alternately recorded in an unrecorded user data area, thereby performing logical overwrite processing. Every time logical overwrite is performed, a system controller cumulatively prepares a correlation list consisting of an old physical address achieved before logical overwrite, an alternately-recorded new physical address, and a data length acquired before logical overwrite and records the thus-prepared list into an optical disk. When logical overwrite is performed a number of times, arbitrary data achieved before logical overwrite are reproduced by sequential reference to the old physical address of the correlation table.01-29-2009
20100278022METHOD AND APPARATUS FOR ACQUIRING AND DISPLAYING IMAGE DATA CORRESPONDING TO CONTENT DATA - An information reproducing apparatus and method thereof. The information reproducing apparatus includes a storage unit, communication unit, controller, and display unit. The storage unit stores music data and at least one first string of characters corresponding to the music data. The reproducing unit reproduces the music data from the storage unit. The communication unit communicates with an image data storage unit, which stores a plurality of image data each corresponding to at least one second string of characters. The controller controls acquisition of one image data from the image data storage unit via the communication unit. The one image data is acquired based on a comparison between the at least one first string of characters and the plurality of the at least one second string of characters. Further, the display unit is configured to display the acquired image data when the reproducing unit is reproducing the music data.11-04-2010
20100296375INFORMATION REPRODUCING APPARATUS - In a case where free space of a local storage becomes smaller than a predetermined threshold while additional contents are downloaded by executing a “BD-Live” function, a screen for deleting old contents is displayed on a display. When a user deletes the old contents and the free space of the local storage becomes equal to or larger than the threshold, the screen displayed on a display is automatically erased. By repeating the deletion of old contents until download of the additional contents is completed, the entire additional contents are completely acquired.11-25-2010
20100254235OPTICAL DISC DRIVE - It is provided an optical disc drive for playing data from a loaded optical disc medium. A controller of the optical disc drive judges whether the processing command has been received and whether a reset command has been received, measures a time between a reception of the processing command and a reception of the reset command in a case where the processing of the received processing command does not end until the reception of the processing command, determines a processing time limit shorter than the measured time, and in a case where the processing of the received processing command does not end until the decided processing time limit has elapsed after the reception of the processing command, stops the processing of the processing command and notifies that the processing of the processing command has been stopped to the host device.10-07-2010
20090022021Optical Disk Drive - After an optical disk drive according to the present invention has been loaded with an optical disk and before the operation of recognizing the type of the given disk is finished, the drive presumes one of multiple types of candidate optical disks, from/on which data is readable and writable using a light beam with the shortest wavelength among the candidate disks, to be the disk being driven by the motor now and gets the beam for the presumed type of disk radiated from a light source (Step (A)). Next, the drive gets the disk spun at a rotational velocity that realizes a linear velocity equal to or higher than a standardized normal velocity when data is read from the presumed type of disk (Step (B)). Thereafter, the drive starts a focus control in a situation where the spot of the beam being formed on the disk is moving on the disk at the linear velocity equal to or higher than the normal velocity (Step (C)). And then the drive performs the operation of recognizing the type of the disk by the light beam reflected from the disk under the focus control (Step (D)).01-22-2009
20110211433RECORDING/REPRODUCING METHOD, RECORDING/REPRODUCING APPARATUS AND INFORMATION STORAGE MEDIUM - A recording and/or reproducing method, a recording and/or reproducing apparatus, and an information storage medium are provided. The method of recording data to an information storage medium includes: according to a change in a method of using the information storage medium, rearranging the order of a first information structure with a variable size and a second information structure with a fixed size, both of which are included in management information of the information storage medium, so that the first information structure with the variable size can be positioned following the second information structure with the fixed size; and recording the rearranged management information on the information storage medium. According to the method and apparatus, recording management information can be found in a fixed location of a finalized information storage medium, thereby allowing the recording management information to be found easily and quickly.09-01-2011
20090097368REAL TIME POWER CONTROL FOR OPTICAL RECORDING DRIVES - The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train (04-16-2009
20080253244Quick Access to Disc Management Information - The invention relates to a method and a recording device for easy and quick access to record carrier management information stored on the record carrier itself. The invention further relates to a record carrier for use in such a method and recording device.10-16-2008
20080205215INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD, INFORMATION REPRODUCING METHOD, INFORMATION RECORDING APPARATUS, AND INFORMATION REPRODUCING APPARATUS - According to one embodiment, the invention allows identification of a data recording unit that does not include any reference picture and a data recording unit that includes a reference picture. Specifying information indicating whether or not a target object includes the data unit that does not include any reference picture or I-picture is provided in management information associated with that object.08-28-2008
20110164485APPARATUS AND METHOD FOR CONTROLLING LAYER JUMP IN OPTICAL DISC DRIVE - A method for controlling layer jump in an optical disc drive is provided. In one embodiment of the present invention, upon request of layer jump, a circumferential position of a rotating disc can be compared with predetermined circumferential position stored in a memory based on a signal generated at a spindle motor and layer jump operation can be performed at the predetermined circumferential position. The predetermined circumferential position can correspond to a position where displacement of a disc in up and down direction while the disc makes one rotation becomes largest and/or smallest. The predetermined circumferential position can be detected when an optical disc inserted is recognized to have two or more recording layers based on a driving signal applied to a focusing actuator at an outer circumference of the disc while a focusing servo is turned on.07-07-2011
20110019516SYSTEM AND METHOD FOR PROVIDING CONTENT IN TWO FORMATS ON ONE DRM DISK - A DRM disk such as a Blu-ray stores content in a high resolution version for playing by a disk player. The disk also stores the same content in a lower resolution version for playing by a secondary device such as a Playstation Portable (PSP). The disk can be engaged with the disk player and the lower resolution format transferred to the secondary player through a mechanism such as a removable medium (e.g., a Sony Memory Stick®) or a USB connection or other means in accordance with DRM restrictions on the disk.01-27-2011
20100284256METHOD FOR IMPROVING READABILITY OF AN OPTICAL DISC, AND ASSOCIATED OPTICAL STORAGE APPARATUS - A method for improving readability of an optical disc includes: changing a first control parameter of an optical storage apparatus that accesses the optical disc and obtaining a plurality of associated values of an index corresponding to the readability of the optical disc for respective changed/unchanged values of the first control parameter; setting the first control parameter to be an optimal value out of the changed/unchanged values of the first control parameter according to the index; changing a second control parameter with the first parameter set to be the optimal value to obtaining a plurality of associated values of the index for respective changed/unchanged values of the second control parameter; and setting the second control parameter to be an optimal value according to the index. The control parameters having their individual optimal values are utilized for further control during decoding. In addition, an associated optical storage apparatus is further provided.11-11-2010
20100329089OPTICAL DISC DRIVE AND METHOD OF OPERATING THE SAME - An optical disc drive, and a method of driving the optical disc drive are provided. Where the optical disc drive has a connectivity or a compatibility with a host that is incompatible with the optical disc drive, a file system and device information accepted by the host are provided. The host may have a compatibility with limited external medium devices and a specific command set for data exchange. The optical disc drive and the method of driving the optical disc drive may transmit compatible information to the host and select the specific command set accepted by the host, so that the optical disc drive is compatible with the host.12-30-2010
20110134734DETERRING THEFT OF OPTICAL MEDIA - An optical media disk is treated with a light-sensitive material that impedes the ability of an optical media player from reading data stored on the disk. This light-sensitive material is a material that changes phase upon exposure to one or more wavelengths of light. During the initial phase, the light-sensitive material will render the disk unreadable. After activation, however, the disk becomes permanently readable by conventional optical media players. In this fashion, theft of yet-to-be-activated optical media is deterred.06-09-2011
20110019515METHOD OF MANAGING DATA IN OPTICAL DISC APPARATUS - A method of managing data in an optical disc apparatus is provided. The type of a loaded disc is checked, and data corresponding to the checked disc type is read from a compressed file, decompressed and stored in a memory of the optical disc apparatus. Recording-related data respectively corresponding to disc types, manufacturers, and recording speeds are separately compressed in the compressed file. Identification information about the disc types, manufacturers, and recording speeds and information on positions at which the recording-related data about the disc types, manufacturers, and recording speeds are stored may be included in the head of the compressed file. The compressed file may include separately compressed servo data, and information on the position at which the servo data is stored may be included in the head of the compressed file. Accordingly, the optical disc manufacturing cost can be decreased and a data loading time can be reduced.01-27-2011
20080219114Information processing device and storage medium - An information processing device includes a reception unit that receives a write instruction to instruct data writing into a recording medium; a plurality of drive units that perform data reading/writing from/into a recording media; a first detection unit that detects a drive unit to which a detachable recording medium is attached, from among the plurality of drive units; a second detection unit that controls the drive unit detected by the first detection unit so as to read information recorded on the detachable recording medium attached to the detected drive unit, and so as to detect a recording medium, the read information from which includes predetermined information; and a control unit that controls the drive unit to which the recording medium detected by the second detection unit is attached, so as to write data which is instructed to be written by the write instruction received by the reception unit, into the recording medium attached to the drive unit.09-11-2008
20100260020INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM - An information processing apparatus includes a data processing section configured to generate data that is capable of being played back using general playback control information containing clip information defining the number of playback packets. The data processing section generates a data file in which data containing a number of playback packets, the number matching the defined number of playback packets, is contained as playback data associated with the clip information.10-14-2010
20100195461Multi-Session Pre-Recorded Storage Medium - Apparatus characterized as a multi-session data storage medium such as an optical disc, and method for formatting the same. In accordance with various embodiments, a first session is recorded onto the medium with a first set of user data. A second session is subsequently recorded onto the medium with a second set of user data. The second session contactingly abuts the first session without the use of an intervening linking area therebetween. This enhances the data storage capacity of the medium irrespective of the total number of sessions applied thereto. In some embodiments, the first session is described by a first file system and the second session is described by a different, second file system independent of the first file system. The respective file systems may be accessed by different readback systems, such a personal computer (PC) and a gaming system.08-05-2010
20100067336DEVICE AND METHOD FOR REPRODUCING INFORMATION AND COMPUTER PROGRAM - An information reproducing device reproduces information in an information recording medium provided with, in addition to a first recording layer readable by a first laser beam, at least one of a second recording layer readable by a second laser beam, and a third recording layer readable by a third laser beam. The information reproducing device includes an optical pickup element applying a laser beam and receiving its reflection; a first judging element first determining whether the first recording layer exists, based on an output from the optical pickup element; a second judging element secondly determining on either of the recording layers is set by a user as a prioritized reproducing layer to be reproduced first; a reproducing element reproducing recorded information; and a control element controlling the reproducing element to reproduce the recorded information, based on outputs from the first judgment element, second judgment, and optical pickup elements.03-18-2010
20090034380PARTIAL-BLOCK OFF-TRACK DATA RECOVERY - Techniques for data recovery from a data block wherein portions of the data block are written at different off-track positions are described. For example, portions of a data block can be read separately for each on-track and off-track position in the data block; then, the separately read portions can be recombined into a recovered data block.02-05-2009
20090175143RECORDING SYSTEM, RECORDING APPARATUS, AND RECORD CONTROL SIGNAL GENERATING APPARATUS - A signal generating unit of a formatter inputs a misalignment amount δ unique to an individual recording apparatus and record data into a record signal compensation unit, and in accordance with these the record signal compensation unit generates a compensated beam deflection signal and substrate velocity signal to a beam unit and rotation and movement drive unit. With this arrangement, it is possible to perform compensation which matches errors in individual unit, in response to the errors (mechanical errors) in assembly dimension precision of parts and control precision of control devices which can vary among individual unit of the recording apparatus.07-09-2009
20090175142METHOD AND SYSTEM OF RECORDING DATA ON A STORAGE MEDIUM - A method of recording data on a storage medium is provided. A first recording indicator is written on the storage medium to indicate a first state of a data recording thereon. A second recording indicator is written on the storage medium to indicate a second state of the data recording thereon. A recording status of the data recording is determined accordingly in accordance with the first and second indicators.07-09-2009
20100020655WRITE-ONCE OPTICAL DISC, AND METHOD AND APPARATUS FOR RECORDING/REPRODUCING MANAGEMENT INFORMATION ON/FROM OPTICAL DISC - A write-once optical disc and a method and apparatus for recording management information on the optical disc are provided. The optical disc includes at least one recording layer and a plurality of temporary defect management areas (TDMAs) on the at least one recording layer. At least one of the TDMAs includes an indicator indicating which one of the TDMAs has an in-use status.01-28-2010
20100020654METHOD AND APPARATUS FOR DATA BUFFER CONTROL OF OPTICAL DISC PLAYER - An optical disc player for playback of a multimedia file stored in an optical disc is disclosed. The optical disc player includes a front-end loader and a back-end playback engine. The front-end loader, including a first data buffer, reads data from the optical disc and stores the read data in the first data buffer when the amount of data stored in the first data buffer is less than a first threshold. The back-end playback engine receives the data from the first data buffer and plays a multimedia segment corresponding to the received data. The front-end loader increases the first threshold of the first data buffer before a time-consuming servo behavior occurs.01-28-2010
20120307611OPTICAL DISC APPARATUS - An optical disc apparatus includes an optical pickup that emits light to an optical disc and receives reflection light reflected by the optical disc, a temperature sensor for detecting ambient temperature of the optical pickup, a temperature control processing portion that performs a process corresponding to temperature information obtained by the temperature sensor, and a filter portion that performs filtering of a signal about the temperature information during a period until the temperature information detected by the temperature sensor is input to the temperature control processing portion.12-06-2012
20120307612OPTICAL DISC, OPTICAL DISC DEVICE, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCTION METHOD - An optical disc for recording information with a plurality of sorts of data recording densities. The optical disc has a plurality of data recording areas for recording information with mutually different data recording densities. Information about the data recording densities in the data recording areas is recorded in a BCA area with a specific format not depending on the data recording densities of the data recording areas. In this case, the data recording areas are located to be divided in the same plane of the disc or to be divided into a plurality of recording layers.12-06-2012
20110305127RECORDING DEVICE AND RECORDING METHOD - A recording device includes: a rotation driving unit that rotates an optical medium having a reference face and a recording layer, at a constant velocity; a light irradiating unit that irradiates the optical recording medium with first and second light through a common object lens; an infocus position adjusting unit that performs adjustment to focus; a light receiving unit that receives reflection light from the reference face; a reproducing clock generating unit that generates a reproducing clock on the basis of a light reception signal; a radial position detecting unit that detects the radial positional information on the basis of the light reception signal and the reproducing clock positional information; a frequency adjusting unit that changes a frequency of an input reference signal; and a recording unit that performs mark recording on the recording layer using the signal obtained by the frequency adjusting unit as a recording clock.12-15-2011
20110141865Metrology for Extreme Ultraviolet Light Source - An extreme ultraviolet light system includes a drive laser system that produces an amplified light beam; a target material delivery system configured to produce a target material at a target location; a beam delivery system configured to receive the amplified light beam emitted from the drive laser system and to direct the amplified light beam toward the target location; and a metrology system. The beam delivery system includes converging lens configured and arranged to focus the amplified light beam at the target location. The metrology system includes a light collection system configured to collect a portion of the amplified light beam reflected from the converging lens and a portion of a guide laser beam reflected from the converging lens. The light collection system includes a dichroic optical device configured to optically separate the portions.06-16-2011
20120099410SYSTEM AND METHOD FOR PROVIDING CONTENT IN TWO FORMATS ON ONE DRM DISK - A DRM disk such as a Blu-ray stores content in a high resolution version for playing by a disk player. The disk also stores the same content in a lower resolution version for playing by a secondary device such as a Playstation Portable (PSP). The disk can be engaged with the disk player and the lower resolution format transferred to the secondary player through a mechanism such as a removable medium (e.g., a Sony Memory Stick®) or a USB connection or other means in accordance with DRM restrictions on the disk.04-26-2012
20110063960OPTICAL DISC APPARATUS - An optical disc apparatus, being improved in a random access speed thereof and superior in a usability thereof, comprises: a virtual disc for memorizing data of at least one (1) pieces of an optical disc; a recording/reproducing means for executing reproduction of data from the optical disc and recording of data onto the optical disc; and a system controller means for controlling the virtual disc and the recording/reproducing means.03-17-2011
20120008473PLAYBACK METHOD FOR OPTICAL DISC, PLAYBACK APPARATUS FOR OPTICAL DISC, NON-TRANSISTORY COMPUTER PROGRAM PRODUCT - Address information that has been error correction encoded is recorded on a second version of a recording medium after being transformed such that such that the address decoding cannot be performed by a playback device that is not compatible with the second version of the recording medium. The address decoding for the second version of the recording medium cannot be performed by the incompatible playback device (for example, a playback device that was manufactured to be compatible only with a first version of the recording medium). In other words, in the playback device that is not compatible with the second version of the recording medium, a state is created in which address errors cannot be corrected, so access is impossible (recording and playback are impossible).01-12-2012
20090129221WRITE-ONCE OPTICAL DISC AND METHOD FOR RECORDING MANAGEMENT INFORMATION THEREON - A write-once optical disc and a method and apparatus for recording management information of the write-once optical disc, are provided. The method includes closing an opened session by closing all opened sequential recording-units of the opened session, opening a new session having a new sequential recording-unit, and recording session start information on the recording medium. The session start information indicates whether or not the new sequential recording-unit is a start of the new session.05-21-2009
20120014235DISK RECORDING DEVICE AND DIGITAL PHOTO FRAME USING THE SAME - A disk recording device includes a processor, and a storage device, a memory reader, a display, an encoder, a disk recorder, all electrically connected to the processor. The storage device is configured for storing a first file. The memory reader is configured for reading the first file. The processor is configured for transforming the first file into a second file of a specific format compatible with the encoder. The encoder is connected to the processor and used for encoding the second file into a third file, and sending the third file to the processor. The processor is also configured for transforming the third file into a disk storable formatted file. The disk recorder is configured for recording the disk storable formatted file in the disk. The present embodiment also relates to a digital photo frame using the disk recording device.01-19-2012
20120014236METHOD AND APPARATUS FOR RECORDING MANUFACTURER INFORMATION ON A RECORDING MEDIUM AND FOR DETERMINING WHETHER THE MANUFACTURER INFORMATION IS EFFECTIVE - A recording medium and a recording apparatus for storing manufacturer information for supporting specific functions for each manufacturer and a method therefor. A reproducing apparatus for reproducing manufacturer information for supporting specific functions and a method therefor is also provided. If a recording apparatus modifies the contents of the recording medium, then it should record its manufacturer's identification code. A recording apparatus/reproducing apparatus should check the identification code on the recording medium before using its own manufacture information item for some specific function. Also, it is possible to reduce the time required to determine whether the manufacturer information items are effective.01-19-2012
20110085428INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING APPARATUS - An information storage medium according to the present invention has n information storage layers (where n is an integer and n≧3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone for determining the recording power of the laser beam. When those n layers are counted from the one that is located most distant from the surface of the medium on which the laser beam is incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test write zones of i04-14-2011
20110103207OPTICAL SYSTEM OF OPTICAL PICK-UP AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - An optical system of an optical pick-up including a resin coupling lens and a resin objective lens with NA larger than 0.8, wherein, magnification β satisfies a condition: −0.13<β<−0.08, a focal length f of the objective lens satisfies a condition: 1.1505-05-2011
20110103208MANUFACTURING METHOD FOR OPTICAL DISC, OPTICAL DISC, PLAYBACK METHOD FOR OPTICAL DISC, PLAYBACK APPARATUS FOR OPTICAL DISC, RECORDING APPARATUS FOR OPTICAL DISC - Address information that has been error correction encoded is recorded on a second version of a recording medium after being transformed such that such that the address decoding cannot be performed by a playback device that is not compatible with the second version of the recording medium. The address decoding for the second version of the recording medium cannot be performed by the incompatible playback device (for example, a playback device that was manufactured to be compatible only with a first version of the recording medium). In other words, in the playback device that is not compatible with the second version of the recording medium, a state is created in which address errors cannot be corrected, so access is impossible (recording and playback are impossible).05-05-2011
20110032806OPTICAL DISC AND OPTICAL DISC APPARATUS - An optical disc recording method for recording disc information to be used in recording/reproducing control on an optical disc, comprises the following steps of: providing a first disc information unit and a second disc information unit, each having a predetermined data size, in a predetermined management information area of the optical disc; the disc information includes write strategy information; separating the write strategy information into first write strategy information and second write strategy information; recording the first disc information into the first disc information unit; and recording the second disc information into the second disc information unit.02-10-2011
20120250479ELECTRON BEAM EXPOSURE SYSTEM AND ELECTRON BEAM EXPOSURE METHOD - When applying an electron beam to a master substrate of disk-shaped recording medium placed on a rotation stage, while rotating the master substrate by rotating the rotation stage, to write a master pattern of disk-shaped recording medium on the master substrate, causing the writing to be suspended based on abnormality information of environment and storing a rotation angle of the master substrate when the writing is suspended and causing, thereafter, the writing to be resumed from a suspended position of the writing on the master substrate based on the rotation angle.10-04-2012
20100290327STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm.11-18-2010
20100246349METHOD FOR MANUFACTURING A STORAGE DISK DRIVE MOTOR, MOTOR FOR DRIVING A STORAGE DISK AND STORAGE DISK DRIVE APPARATUS PROVIDED WITH THE MOTOR - A storage disk drive motor 09-30-2010
20100246348OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING APPARATUS, AND OPTICAL INFORMATION RECORDING MEDIUM - An optical information reproducing method includes: obtaining information about a wavelength of a reference beam at recording time from a recording medium which stores main information recorded as a pattern corresponding to interference between an information beam and the reference beam and information about the wavelength of the reference beam at the recording time; determining an aiming temperature, which is a temperature of the recording medium suited to reproduce the pattern; determining an aiming incident angle, which is an incident angle of the reference beam at the reproducing time suited to reproduce the pattern; controlling the temperature of the recording medium so that the temperature of the recording medium is generally equal to the aiming temperature; and controlling the incident angle of the reference beam at the reproducing time so that the incident angle of the reference beam at the reproducing time is generally equal to the aiming incident angle.09-30-2010
20100220567Optical Information Recording Medium, Reproducing Device for Optical Information Recording Medium, Control Method and Control Program for the Reproducing Device, and Medium with the Control Program Recorded Therein - A super-resolution medium (09-02-2010
20100271914DRIVE APPARATUS - The present invention relates to a drive apparatus (10-28-2010
20100008197OPTICAL DISK APPARATUS AND EMISSION CONTROL METHOD - An optical disk apparatus according to the present invention includes a spindle motor that rotates an optical disk on whose information recording surface a plurality of addresses is recorded, an optical pickup that records/reproduces an information signal on/from the information recording surface of the optical disk rotated by the spindle motor, an strobe light-emitting unit that irradiates a label surface of the optical disk with light, and a control unit that causes the strobe light-emitting unit to emit light based on an address selected from the plurality of addresses as a reference address and a reference signal readable from the optical disk.01-14-2010
20120257485METHOD OF, AND APPARATUS FOR, RECORDING ADDRESS INFORMATION TO DISC MEDIUM10-11-2012
20080298188Device for and Method of Recording Information on a Record Carrier - A recording device for recording information at addressable locations on a removable record carrier for storing data. The device comprises monitoring means (12-04-2008
20120327754Vertical Cavity Surface Emitting Laser With Integrated Mirror And Waveguide - An apparatus includes an extended cavity vertical cavity surface emitting laser producing light and having an active region, a first reflector position adjacent to a first side of the active region, an extended cavity positioned adjacent to a second side of the active region, and a second reflector reflecting a first portion of the light into the extended cavity and transmitting a second portion of the light, a planar waveguide positioned adjacent to the extended cavity vertical cavity surface emitting laser, and a horizontal coupler structured to couple the second portion of light from the extended cavity vertical cavity surface emitting laser into the waveguide.12-27-2012
20100238775RECORDING MEDIUM REPRODUCING DEVICE, A METHOD FOR REPRODUCING A RECORDING MEDIUM, A PROGRAM FOR REPRODUCING A RECORDING MEDIUM, AND A RECORDING MEDIUM - Problems In a recording medium such as DVD, for example, when groups having the same title or the same song and different numbers of channels are recorded, all the groups are reproduced, further, when a DVD author mistakes, contents which are not needed to be reproduced are reproduced.09-23-2010
20100232270OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS, INFORMATION RECORDING METHOD, INFORMATION REPRODUCING METHOD AND METHOD FOR PRODUCING OPTICAL INFORMATION RECORDING MEDIUM - An optical information storage medium according to the present invention has at least one information storage layer. The optical information storage medium has a management area that stores at least one unit containing control information about the optical information storage medium. The control information includes a format number, which provides information about at least a write strategy type and a write pre-compensation type, and a write strategy parameter, which provides information about the magnitude of shift in an edge position, or variation in the pulse width, of a write pulse train to form a recording mark. And the value of the format number changes according to a combination of the write strategy type and the write pre-compensation type.09-16-2010
20100177608OPTICAL DISC AND METHOD FOR CONTROLLING THE SAME - In an optical disc having a multilayer structure in which recording layers are bonded to each other, the number of times additional writing can be performed is increased. A method for controlling an optical disc device according to the present invention comprises steps of calculating a displacement amount generated when the recording layers are bonded to each other; and identifying the size of a recordable area in a non-usable area predetermined on the recording layer based on the displacement amount.07-15-2010
20100177607RECORDING DEVICE, RECORDING METHOD, AND COMPUTER PROGRAM - A recording apparatus and the like for creating an optical disc which is recognizable as a finalized disc even when an accidental power interruption or a serious write error occurs before finalize processing is completed is provided.07-15-2010
20100202262BLOCK NOISE DETECTION AND FILTERING - Systems and methods for block noise detection and filtering are disclosed. One embodiment includes, computing difference magnitudes in pixel values for adjacent pixels in the image. The difference magnitudes can include horizontal difference magnitudes for horizontally adjacent pixels and vertical difference magnitudes for vertically adjacent pixels. One embodiment further includes using normalized sums of the difference magnitudes to determine a set of noise characteristics of the block noise and a set of image characteristics of the image and configuring inputs to the block noise filter using the set of noise and image characteristics.08-12-2010
20100202261OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM MANUFACTURING METHOD, REPRODUCTION SIGNAL PROCESSING METHOD AND EVALUATION METHOD - An optical head 08-12-2010
20100142341INFORMATION STORAGE MEDIUM, AND RECORDING/REPRODUCING APPARATUS AND METHOD - An information storage medium, and a recording/reproducing apparatus and method, the information storage medium including a plurality of recording layers, each layer including a lead-in area or a lead-out area, a data area, a middle area, and a dedicated area, wherein the data area is flexibly allocated according to data capacity to be recorded in each of the recording layers, the middle area is allocated behind the data area, and the dedicated area is allocated behind the middle area. The dedicated area for a special purpose may selectively be allocated in an outer circumferential area of the information storage medium, i.e., an optical disk including a plurality of recording layers. In particular, optical disks in various formats are provided in which dedicated areas for special purposes can selectively be allocated in outer circumferential areas of the optical disks depending on recording characteristics of the optical disks and the outer circumferential areas.06-10-2010
20100142340Optical Disc Apparatus - An optical disc apparatus that reproduces images from an optical disc by reading image data from the optical disc and displaying images based on the image data read from the optical disc. When the optical disc apparatus reproduces images from an optical disc, the apparatus performs a preparation operation for reproduction of images from the optical disc. During the preparation operation, a controller sequentially displays different types of initial images as time passes. For example, the first initial image, which is to be displayed first of the initial images, is an image indicating the type of the optical disc as well as showing the name of the manufacturer of the optical disc apparatus. The second and third initial images are a scenic image and an image showing a message to a user, respectively.06-10-2010
20130016594OPTICAL DISK APPARATUSAANM Kondo; KenjiAACI OsakaAACO JPAAGP Kondo; Kenji Osaka JPAANM Fujiune; KenjiAACI OsakaAACO JPAAGP Fujiune; Kenji Osaka JPAANM Yamamoto; TakeharuAACI OsakaAACO JPAAGP Yamamoto; Takeharu Osaka JP - Provided is an optical disk apparatus capable achieving stable focus control or tracking control. A first detector receives reflected light from an object lens optical system, a second detector receives reflected light from a prescribed information layer, a positional deviation determination unit determines positional deviation between a focal point of a light beam and a point where information on the prescribed information layer is recorded or reproduced, on the basis of a signal from the second detector, a stray light determination unit determines a surface stray light component which is reflected light from the surface of an optical disk and is included in the signal from the positional deviation determination unit, on the basis of the signal from the first detector, and a stray light correction unit corrects the signal output from the positional deviation determination unit on the basis of the surface stray light component thus determined.01-17-2013
20130016593SYSTEM AND METHOD FOR INITIALIZATION OF MEDIA ASSET MODULES FOR IMPROVED EXECUTION SEQUENCE ON A PLAYBACK ENVIRONMENTAANM Prestenback; KyleAACI BurbankAAST CAAACO USAAGP Prestenback; Kyle Burbank CA USAANM Robert; ArnaudAACI Simi ValleyAAST CAAACO USAAGP Robert; Arnaud Simi Valley CA US - There is provided a system and method for initialization of media asset modules for an improved execution sequence on a playback environment. The system includes a player application configured to segment media assets associated with a primary media content into a plurality of asset modules, assemble the plurality of asset modules into a media file, identify a first subset of asset modules from the plurality of asset modules for loading in a first loading process, determine a loading sequence for the first subset of asset modules, and load the first subset of asset modules according to the loading sequence before beginning playback of the primary media content. The player application may be further configured to identify, determine another loading sequence for, and load additional asset modules after playback of the primary media content has begun.01-17-2013
20110158067Recording/reproducing device and method for controlling same - A recording/reproducing device includes: a data comparing section which compares, at the time of ejection of an optical disc, recorded information recorded on a ROM layer of the optical disc and relevant information (e.g., additional data) which is stored in the recording/reproducing device and which is related to registered information (e.g., content) recorded on an RE layer of the optical disc; and a data selecting section which selects, based on a result of the comparison by the data comparing section, relevant information for recording to be recorded on the ROM layer of the optical disc from among the relevant information.06-30-2011
20110158066BACKUP DEVICE AND ONE-KEY DATA BACKUP METHOD FOR THE SAME - A backup device and a one-key data backup method for the same use a backup device having ability to retrieve a memory card and an optical disc. The backup device is connected to an external computer. A backup application is installed having backup conditions configured in the external computer. When an input unit of the backup device is triggered, the backup device sends a backup request instruction to the external computer. The external computer executes the backup application upon receiving the backup request instruction, and records data of the memory card to an optical disc, or saves the data of the optical disc in the memory card based on configured backup conditions.06-30-2011
20080253245Optical disc recording apparatus - A DSP (digital signal processor) of a DVD recorder has a pulse type setting section that sets the type of write pulse, a reference power setting section that sets a reference power that is a reference value of the drive power of the write pulse, a pulse type checking section that checks whether or not the type of write pulse thus set is a write pulse consisting of a plurality of pulses, the write pulse being of a type that allows the drive power to be set for each of the plurality of pulses, a power correcting section that corrects, if the set type of write pulse is found to be a write pulse consisting of a plurality of pulses, the drive power of at least one pulse of the plurality of pulses constituting the write pulse by adding a previously set correction power to the set reference power, and a drive control section that applies to an LD the write pulse consisting of the pulse with the set reference power and the pulse with the corrected drive power.10-16-2008
20130094338OPTICAL PICKUP AND OPTICAL READ/WRITE APPARATUS - An optical pickup includes: a light source; a first diffractive element which diffracts light polarized in a particular direction; an objective lens; a lens actuator which shifts the objective lens so that the magnitude of shift from its initial position in a tracking direction has an upper limit of 0.3 mm to 0.6 mm; a wave plate; a second diffractive element which has two diffraction regions configured to diffract light polarized in a direction that intersects with the particular direction at right angles and which splits the write beam reflected from the optical storage medium through each diffraction region into a transmitted light beam and at least one diffracted light beam; and a photodetector which detects the transmitted light beam, the diffracted light beams that have left the two diffraction regions, and the read beam reflected from the optical storage medium.04-18-2013
20110273972CODING APPARATUS, CODING METHOD, RECORDING APPARATUS, RECORDING METHOD, DECODING APPARATUS, AND DECODING METHOD - A coding apparatus includes a transform table in which with regard to data words of m bits and code words of n bits where n and m are both integers and also n>m is established, 211-10-2011
20100278023SYSTEMS FOR OBTAINING WRITE STRATEGY PARAMETERS UTILIZING DATA-TO-CLOCK EDGE DEVIATIONS, AND RELATED METHOD AND OPTICAL STORAGE DEVICE THEREOF - A system in an optical storage device has a controller which obtains a plurality of write strategy parameters for the optical storage device to write data on an optical storage medium. The write strategy parameters are derived from data-to-clock edge deviations respectively corresponding to a plurality of data set types. Each of the data set types corresponds to a combination of at least a specific target pit length and a specific target land length, or a combination of at least a specific target land length and a specific target pit length.11-04-2010
20100290326INFORMATION RECORDING MEDIUM, METHOD FOR RECORDING INFORMATION ON INFORMATION RECORDING MEDIUM, METHOD FOR REPRODUCING INFORMATION FROM INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING INFORMATION RECORDING MEDIUM - The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value. The size of the offset value is at least a half as large as that of the reference value.11-18-2010
20100315918LASER DIODE DRIVER WITH WAVE-SHAPE CONTROL - An optical disk drive system associated with a laser diode is described. The optical disk drive system comprises a current generator for receiving input signals; a current switch coupled to receive timing signals; a current driver coupled to receive output signals from the current switch and the current generator, the current driver further comprising a driver with wave shape control selected from the group consisting of a laser diode read driver and a laser diode write driver, wherein the driver with shape control is operative for transmitting at least one output signal that is a scaled version of at least one of the output signals received from the current generator, wherein the current driver is operative for transmitting at least one output signal driving the laser diode.12-16-2010
20100315917INPUT CURRENT CHANNEL DEVICE - An input current channel device is described. This device comprises a first terminal for receiving a reference signal; a second terminal for receiving a first target signal; a pass through device coupled to the first terminal, the pass through device operative for transmitting a delayed reference signal in response to receiving the reference signal; a first combination logic device coupled to the first terminal and the second terminal, the first combination logic device operative for transmitting a first combination logic signal in response to receiving the reference signal and the first target signal; a selection device coupled for receiving the delayed reference signal, the first combination logic signal, and a first synchronization signal, the selection device operative for selectively transmitting a second synchronization signal, and wherein selectively transmitting the second synchronization signal reduces skew between the reference channel and the first target channel.12-16-2010
20130121123METHOD FOR RECORDING ON AND READING OUT FROM OPTICAL INFORMATION RECORDING MEDIUM - Recording and reading method for optical information recording medium comprising: recording layer having thickness not less than 2λ/n, where λ is wavelength of recording beam and n is refractive index of the recording layer, and configured to undergo a change in the refractive index by irradiation with the recording beam; and adjacent layer adjacent to the recording layer at a side opposite to an incident side, comprises the steps of: recording a recording spot by irradiating with the recording beam, while shifting focal position by offset amount d, which satisfies ω05-16-2013
20120087221DATA WRITING CONTROL DEVICE, DATA WRITING CONTROL METHOD, AND DATA WRITING CONTROL PROGRAM - A data writing control device enable quickly writing data to optical discs. A reading process unit 04-12-2012

Patent applications in class Control of information signal processing channel

Patent applications in all subclasses Control of information signal processing channel